73491-34-6

Synonym:Perchloric acid, Mercury(II) salt, trihydrate.

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Section 2: Composition and Information on Ingredients
IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL)
Title Compound73491-34-6100%0.025mg/m31mg/10m3

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Section 3: Hazards Identification
Emergency Overview:Causes irritation to the eyes, skin and respiratory tract. May affect thyroid and kidney functions.
Primary Routes of Exposure:Ingestion
Eye Contact:Causes irritation of the eyes.
Skin Contact:Causes irritation of the skin. Harmful in contact with skin.
Inhalation:Effects include severe respiratory and gastrointestinal distress and damage the central nervous system.
Toxic if swallowed. Ingestion may lead to dizziness, abdominal cramps, vomiting, bloody diarrhea, weakness
Ingestion:
and convulsions.
Acute Health Affects:Poison. Severe immediate toxicity of the gastrointestinal tract that can be fatal
The chronic effects of mercury poisoning include stomatitis, tremors, physic disturbances, excessive
Chronic Health Affects:salivation, pain on chewing, loss of memory, irritability and depression. Perchlorates reversibly inhibit thyroid
iodine uptake. Kidney function affected.
NTP:No
IARC:No
OSHA:No

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SECTION 4: First Aid Measures
Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need
Eye Exposure:
assistance in keeping their eye lids open. Get immediate medical attention.
Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if
Skin Exposure:
irritation persists.
Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty
Inhalation:
in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce
Ingestion:
vomiting only if directed by medical personnel.

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SECTION 5: Fire Fighting Measures
Flash Point:no data
Autoignition Temperature:no data
Explosion Limits:no data
Extinguishing Medium:Water spray
Spray closed containers with water until fire is out. Avoid contact with combustible material. Fire fighters
Special Fire Fighting Procedures:
should be equipped with a NIOSH approved self-contained breathing apparatus.
Hazardous Combustion andIf involved in a fire this material may emit corrosive hydrogen chloride fumes and toxic mercury vapors.
Decomposion Products:
Releases oxygen on heating. May decompose explosively under fire fighting conditions. Do not mix with
Unusual Fire or Explosion Hazards:
combustibles.

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SECTION 6: Accidental Release Measures
Do not mix spilled powder with any combustible materials, such as sawdust. Sweep up the solid and dilute
Spill and Leak Procedures:
with water.

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SECTION 7: Handling and Storage
Store in a tightly sealed container in a cool dry place away from combustible and flammable materials. If the
Handling and Storage:
container is left open, salt may adsorb moisture from the atmosphere

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SECTION 8: Exposure Controls and Personal Protection
Eye Protection:Always wear approved safety glasses when handling a chemical substance in the laboratory.
Skin Protection:Wear protective clothing and gloves.
Ventilation:If possible, handle the material in an efficient fume hood.
If ventilation is not available a respirator should be worn. The use of respirators requires a Respirator
Respirator:
Protection Program to be in compliance with 29 CFR 1910.134.
Ventilation:If possible, handle the material in an efficient fume hood.
Additional Protection:No additional protection required.

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SECTION 9: Physical and Chemical Properties
Color and Form:white xtl.
Molecular Weight:399.46 (453.51)
Melting Point:no data
Boiling Point:no data
Vapor Pressure:no data
Specific Gravity:~4
Odor:none
Solubility in Water:soluble

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SECTION 10: Stability and Reactivity
Stability:Hygroscopic
Hazardous Polymerization:no hazardous polymerization
Conditions to Avoid:Any contact with combustible matter.
Incompatibility:Reducing agents, organic matter, active metals, phosphorus, sulfur, hydrazine, hydroxylamine, strong acids
Decomposition Products:Oxygen, mercury oxide, hydrogen chloride,

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SECTION 11: Toxicological Information
RTECS Data:No information available in the RTECS files.
Carcinogenic Effects:No data available
Mutagenic Effects:No data available
Tetratogenic Effects:No data available

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SECTION 12: Ecological Information
Avoid release to the environment. Very toxic to aquatic organisms. May cause long-term adverse effects in the
Ecological Information:
aquatic environment.

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SECTION 13: Disposal Considerations
Disposal:Dispose of according to local, state and federal regulations.

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SECTION 14: Transportation
Shipping Name (CFR):Oxidizing solid, Toxic, N.O.S.
Hazard Class (CFR):5.1
Additional Hazard Class (CFR):6.1
Packaging Group (CFR):II
UN ID Number (CFR):UN# 3087
Shipping Name (IATA):Oxidizing Solid, Toxic, N.O.S.
Hazard Class (IATA):5.1
Additional Hazard Class (IATA):6.1
Packaging Group (IATA):II
UN ID Number (IATA):UN# 3087

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SECTION 15: Regulatory Information
TSCA:Not listed in the TSCA inventory.
SARA (Title 313):Title compound: See Category Code N458.
Second Ingredient:none

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SECTION 16 - ADDITIONAL INFORMATION
N/A